Abstract
Ferrier reaction between acetylglycals and p-NO2, m-NO2 and p-t-butylphenol after recrystallization gave aryl O2−glycosides as the pure α anomers. Deacetylation of these compounds and benzylation of the crude diol led to the corresponding aryl α-O2−4,6-di-O-benzyl-glycosides in large amounts.